.showDiv{
    position: absolute;
    top: 0px;
    left: 0px;
    width: 500px;
    height: 500px;
    background-color: rgba(250,0,0,0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    visibility: hidden;
}
.contentDiv{
    padding: 20px;
    width: 600px;
    height: 200px;
    background-color: white;
    position: relative;
}
.tableDiv{
    border: 1px solid black;
    width: 400px;
    left: 60px;
}